audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Winter tyres with speed symbol "V" > < Speed rating / maximum speed
Speed symbols for tyres
Speed symbols for tyres
Table → Chapter
The speed symbol (e.g. „T“) indicated after the tyre size (e.g. 185/65 R 14 86T) indicates the maximum permissible speed (vmax) for the tyre.
The tyres for the vehicle must be selected so that their maximum permissible speed is above the maximum speed that the vehicle can reach (due to rated speed of vehicle).
Vehicles with German operating permit
The maximum speed for vehicles with a German operating permit is calculated as follows:
Formula for vehicles with speed „v“ up to 150 km/h
   vmax = 1.03 x v + 3.5 km/h
Example: quoted maximum speed v = 145 km/h
   vmax = 1.03 x 145 km/h + 3.5 km/h = 152.85 km/h
In this example a tyre marked with the tyre symbol „Q“ or a speed symbol from a higher rating must be used.
Formula for vehicles with speed „v“ above 151 km/h
   vmax = 1.01 x v + 6.5 km/h
Example: quoted maximum speed v = 163 km/h
   vmax = 1.01 x 163 km/h + 6.5 km/h = 171.13 km/h
In this example a tyre marked with the tyre symbol „S“ or a speed symbol from a higher rating must be used.
Vehicles with EC type approval
The required speed rating of tyres for all vehicles with an EC type approval is calculated as follows:
   vmax = 1.05 x v
Example: quoted maximum speed v = 172 km/h
   vmax = 1.05 x 172 km/h = 180.60 km/h
In this example a tyre marked with the tyre symbol „T“ or a speed symbol from a higher rating must be used.
It is permitted to use tyres with a speed symbol from a higher rating. The same applies to tyres with a higher load index value.
  Note
Substitute the maximum speed entered in entry field „T“ in the registration document (part 1 or 2)/under item „6“ in the German registration document for the letter „v“ in the formula. This calculation is necessary because for technical reasons all vehicles reach different maximum speeds within a legally permissible tolerance range.
   

Winter tyres with speed symbol "V" > < Speed rating / maximum speed